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Hawaii and Guam Concerns; Severe Weather for the Plains; Heavy Snow for Sierra-Nevada

Heavy rainfall capable of causing flash flooding will continue to impact Hawaii through Monday. Severe thunderstorms and heavy rain are possible in parts of Texas and the southern Plains and the Upper Great Lakes. Heavy mountain snow continues in California's Sierra Nevada and rain with gusty winds to lower elevations. Super Typhoon Sinlaku will impact the Marianas through midweek. Read More >

Hazardous Weather Conditions

Current conditions at

Guam International Airport (PGUM)

Lat: 13.48°NLon: 144.8°EElev: 304ft.

Heavy Rain Fog/Mist and Breezy

74°F

23°C

Humidity 94%
Wind Speed N 24 G 40 mph
Barometer 29.50 in (998.2 mb)
Dewpoint 72°F (22°C)
Visibility 1.25 mi
Last update 13 Apr 4:54 pm ChST
Extended Forecast for

Agat GU

Typhoon Watch until further notice
Tropical Storm Warning until further notice
Flood Watch April 13, 05:16pm until April 15, 10:00am
Flood Advisory until April 13, 10:00pm
High Surf Warning April 13, 05:16pm until April 16, 06:00pm
Coastal Flood Warning until April 16, 05:00am
Click here for hazard details and duration
Typhoon Watch until further notice
Tropical Storm Warning until further notice
Flood Watch
Flood Advisory
High Surf Warning
Coastal Flood Warning
  •  
    Typhoon Watch until further notice
    Tropical Storm Warning until further notice
    Flood Watch April 13, 05:16pm until April 15, 10:00am
    Flood Advisory until April 13, 10:00pm
    High Surf Warning April 13, 05:16pm until April 16, 06:00pm
    Coastal Flood Warning until April 16, 05:00am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • This Afternoon

    High: 84 °F

    Scattered
    Showers and
    Windy

  • Tonight

    Tonight: Scattered showers and thunderstorms. Cloudy, with a low around 79. Windy, with a north northwest wind 34 to 38 mph, with gusts as high as 48 mph. Chance of precipitation is 50%.

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Tuesday

    Tuesday: Scattered showers and thunderstorms. Cloudy, with a high near 83. Windy, with a west northwest wind 38 to 43 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.

    High: 83 °F

    Scattered
    Showers and
    Windy

  • Tuesday Night

    Tuesday Night: Scattered showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then scattered showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 79. Windy, with a west wind 38 to 43 mph, with gusts as high as 55 mph. Chance of precipitation is 70%.

    Low: 79 °F

    Heavy Rain
    and Windy

  • Wednesday

    Wednesday: Scattered showers and thunderstorms. Cloudy, with a high near 84. Windy, with a west southwest wind 32 to 37 mph, with gusts as high as 48 mph. Chance of precipitation is 40%.

    High: 84 °F

    Scattered
    Showers and
    Windy

  • Wednesday Night

    Wednesday Night: Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy. Chance of precipitation is 30%.

    Low: 79 °F

    Scattered
    Showers and
    Windy

  • Thursday

    Thursday: Scattered showers and thunderstorms before noon. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 30%.

    High: 85 °F

    Breezy.
    Scattered
    Showers then
    Partly Sunny

  • Thursday Night

    Thursday Night: Mostly cloudy, with a low around 78. Breezy.

    Low: 78 °F

    Mostly Cloudy
    and Breezy

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Cloudy, with a high near 84. Windy, with a north wind around 34 mph, with gusts as high as 45 mph. Chance of precipitation is 50%.
Tonight
Scattered showers and thunderstorms. Cloudy, with a low around 79. Windy, with a north northwest wind 34 to 38 mph, with gusts as high as 48 mph. Chance of precipitation is 50%.
Tuesday
Scattered showers and thunderstorms. Cloudy, with a high near 83. Windy, with a west northwest wind 38 to 43 mph, with gusts as high as 55 mph. Chance of precipitation is 50%.
Tuesday Night
Scattered showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 9pm, then scattered showers and thunderstorms after 9pm. Some of the storms could produce heavy rainfall. Cloudy, with a low around 79. Windy, with a west wind 38 to 43 mph, with gusts as high as 55 mph. Chance of precipitation is 70%.
Wednesday
Scattered showers and thunderstorms. Cloudy, with a high near 84. Windy, with a west southwest wind 32 to 37 mph, with gusts as high as 48 mph. Chance of precipitation is 40%.
Wednesday Night
Scattered showers and thunderstorms. Mostly cloudy, with a low around 79. Windy. Chance of precipitation is 30%.
Thursday
Scattered showers and thunderstorms before noon. Partly sunny, with a high near 85. Breezy. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 78. Breezy.
Friday
Partly sunny, with a high near 86. Breezy.
Friday Night
Partly cloudy, with a low around 79.
Saturday
Mostly sunny, with a high near 87.
Saturday Night
Partly cloudy, with a low around 79.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Partly cloudy, with a low around 77.
Monday
Mostly sunny, with a high near 84.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Agat GU
 13.38°N 144.67°E
Last Update:
4:44 pm ChST Apr 13, 2026
Forecast Valid:
5pm ChST Apr 13, 2026-6pm ChST Apr 20, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation